check_health
Live status, directory-wide or per service (uptime snapshots, consecutive failures).
How to use it
check_health is exposed by the X402 List MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the check_health tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install X402 List MCP
npx -y x402-list-mcpOther tools in X402 List MCP (5)
Paid ($0.25 USDC on Base, x402). Fresh on-demand AI comparison of a shortlist of listed services for a stated need. Pass-through: it never holds keys, never signs, and never settles. Call without paymentsignatureb64 to get the x402 challenge verbatim, sign it client-side, then retry with the signatu
Ranked recommendation for a need, computed server-side (GET /api/v1/best). Ranks mostly by reliability, x402 compliance and price (status, verified, uptime, response time, USD price), with a small (~10%) weight on per-service on-chain traction; shared-payout and unmeasured-network services stay neut
Per-facilitator on-chain-verified settlement volume (today UTC/7d/30d/all) in USD, tx counts, and an on-chain vs listed flag. The 24h fields cover today (UTC) so far, not a trailing 24-hour window.
Full detail for one service by slug: endpoints, per-endpoint USD pricing, uptime windows, networks, settlement asset.
Search and filter the directory by query, category, network, status, and signable (whether the last observed 402 envelope carries the EIP-712 domain parameters a standard x402 client needs in order to sign); sort by newest/uptime/cheapest/endpoints.